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Design and synthesis of potent beta-secretase (BACE1) inhibitors with P1' carboxylic acid bioisosteres.

Authors :
Kimura T
Hamada Y
Stochaj M
Ikari H
Nagamine A
Abdel-Rahman H
Igawa N
Hidaka K
Nguyen JT
Saito K
Hayashi Y
Kiso Y
Source :
Bioorganic & medicinal chemistry letters [Bioorg Med Chem Lett] 2006 May 01; Vol. 16 (9), pp. 2380-6. Date of Electronic Publication: 2006 Feb 14.
Publication Year :
2006

Abstract

Recently, we reported potent and small-sized beta-secretase (BACE1) inhibitors KMI-420 and KMI-429 in which we replaced the Glu residue at the P4 position of KMI-260 and KMI-360, respectively, with a 1H-tetrazole-5-carbonyl DAP (L-alpha,beta-diaminopropionic acid) residue. At the P1' position, these compounds contain one or two carboxylic acid groups, which are unfavorable for crossing the blood-brain barrier. Herein, we report BACE1 inhibitors with P1' carboxylic acid bioisosteres in order to develop practical anti-Alzheimer's disease drugs. Among them, tetrazole ring-containing compounds, KMI-570 (IC50=4.8 nM) and KMI-684 (IC50=1.2 nM), exhibited significantly potent BACE1 inhibitory activities.

Details

Language :
English
ISSN :
0960-894X
Volume :
16
Issue :
9
Database :
MEDLINE
Journal :
Bioorganic & medicinal chemistry letters
Publication Type :
Academic Journal
Accession number :
16481167
Full Text :
https://doi.org/10.1016/j.bmcl.2006.01.108